Tidy up mesh topography
Perhaps you can be helped by the remesh modifier:

http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.62/Remesh_Modifier

It uses the shape of the original mesh but builds it from scratch with even quads. The setting octtree depth controls how detailed the new mesh becomes.

Here I have made a little example. Because I started with a icosphere, there are visible edges of the original mesh. As you can see, there are some more settings to tweak, especially the mode operator can be experimented with.

Start mesh:


With modified:


Modified applied (mode sharp), in edit mode to show even topology:


Modifier applied (mode smooth):